Java developers use the Character, String, StringBuffer, and StringTokenizer classes to represent and manipulate text in programs. Learn how to create objects from these classes and examine their ...

String[ ] – An array of configuration parameters to be used by the application can be passed into the main function as arguments. args – The configuration parameters passed into the main function in ...

Function<Integer, String> functionClass = new FunctionClass(); System.out.println(functionClass.apply(2)); When you run the above code, the output would be four. Java Function interface example.